# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2011-05-21 20:06:36
# Node ID 7bb7be1c13853487fa6fd980b622ec4779754dc8
# Parent  cd1ca2556cac5d1eaf7f6a1f09c50b63d5ad0557

patch: add diffstatsum helper

diff --git a/mercurial/patch.py b/mercurial/patch.py
--- a/mercurial/patch.py
+++ b/mercurial/patch.py
@@ -1681,6 +1681,16 @@ def trydiff(repo, revs, ctx1, ctx2, modi
             if text:
                 yield text
 
+def diffstatsum(stats):
+    maxfile, addtotal, removetotal, binary = 0, 0, 0, False
+    for f, a, r, b in stats:
+        maxfile = max(maxfile, encoding.colwidth(f))
+        addtotal += a
+        removetotal += r
+        binary = binary or b
+
+    return maxfile, addtotal, removetotal, binary
+
 def diffstatdata(lines):
     diffre = re.compile('^diff .*-r [a-z0-9]+\s(.*)$')